Public cases

The 2001 GMC Yukon suddenly lost reverse and park while driving and imploded the transmission in the process. The 2004 Buick Rendezvous started slipping and ceased to move by it's own power when at operating temperature. The 2006 GMC Yukon Denali stopped shifting gears while on the freeway at 55 mph and systematically lost all moving gears within a day also while at operating temperature.

Observed

The 2001 GMC Yukon suddenly lost reverse and park while driving and imploded the transmission in the process. The 2004 Buick Rendezvous started slipping and ceased to move by it's own power when at operating temperature. The 2006 GMC Yukon Denali stopped shifting gears while on the freeway at 55 mph and systematically lost all moving gears within a day also while at operating temperature.

Inspection

Not stated

Repair

Not stated

Outcome

Not stated

Why selected：The source's vehicle field says Yukon; whether it is an XL is not stated.

This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.

Communication summary

This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.

Why selected：The source's vehicle field includes the trim.

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

Communication summary

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

Why selected：The source's vehicle field says Yukon; whether it is an XL is not stated. The trim (Denali) is not stated.

Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.

Communication summary

Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.

Why selected：The source's vehicle field includes the trim.

This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle. Â

Communication summary

This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle. Â

Why selected：The source's vehicle field says Yukon; whether it is an XL is not stated. The trim (Denali) is not stated.

This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.

Communication summary

This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.

Why selected：The source's vehicle field includes the trim.

The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

Communication summary

The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

Why selected：The source's vehicle field includes the trim.

Magnetically Controlled Suspension Electrical Connector Not Seated.

Communication summary

Magnetically Controlled Suspension Electrical Connector Not Seated.

Why selected：The source's vehicle field includes the trim.

This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.

Communication summary

This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.

Why selected：The source's vehicle field includes the trim.

High Voltage Safety ? High Voltage Disabling

Communication summary

High Voltage Safety ? High Voltage Disabling

Why selected：The source's vehicle field includes the trim.

This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).

Communication summary

This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).

Why selected：The source's vehicle field includes the trim.

J-35616-64B Terminal Test Probe / Replacement Terminal / Terminated Lead.

Communication summary

J-35616-64B Terminal Test Probe / Replacement Terminal / Terminated Lead.

Why selected：The source's vehicle field includes the trim.

J-35616-64B Terminal Test Probe / Replacement Terminal / Terminated Lead.

Communication summary

J-35616-64B Terminal Test Probe / Replacement Terminal / Terminated Lead.

Why selected：The source's vehicle field includes the trim.

This informational bulletin provides information for the IPC odometer programming method quick reference guide.

Communication summary

This informational bulletin provides information for the IPC odometer programming method quick reference guide.

Why selected：The source's vehicle field includes the trim.

The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

Communication summary

The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

Why selected：The source's vehicle field includes the trim.

This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.

Communication summary

This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.

Why selected：The source's vehicle field includes the trim.

This service bulletin provides information on Module Harvesting.

Communication summary

This service bulletin provides information on Module Harvesting.

Why selected：The source's vehicle field includes the trim.

This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).

Communication summary

This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).

Why selected：The source's vehicle field includes the trim.

The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

Communication summary

The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

Why selected：The source's vehicle field includes the trim.

This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

Communication summary

This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

Why selected：The source's vehicle field includes the trim.

Service Update Bulletin (Labor Codes Added). Certain vehicles may have a condition where the engine control module (ECM) software allows the Auto Stop to occur at a state of charge below 65%. Auto Stop is supposed to be inhibited at 65% to protect against excessive battery wear and discharge. Dealers are to reprogram the ECM.

Communication summary

Service Update Bulletin (Labor Codes Added). Certain vehicles may have a condition where the engine control module (ECM) software allows the Auto Stop to occur at a state of charge below 65%. Auto Stop is supposed to be inhibited at 65% to protect against excessive battery wear and discharge. Dealers are to reprogram the ECM.

Why selected：The trim (Denali) is not stated.

OnStar® Voice Fallback Number Update Some customers may have received a letter from OnStar® stating that "We recently tried to provide a software update to the OnStar® hardware in your vehicle. However, your system could not be updated remotely. As a result, some of your OnStar® system functions may not be working as expected." The customer is further instructed in this letter to "Please contact your dealer – or any dealer near you – as soon as possible to schedule an appointment for this no-cost software update. Your dealer will reprogram your OnStar® module with an update. This is for vehicles that have previously received the Canada upgrade as described in Service Bulletin #15-08-44-001F."

Communication summary

OnStar® Voice Fallback Number Update Some customers may have received a letter from OnStar® stating that "We recently tried to provide a software update to the OnStar® hardware in your vehicle. However, your system could not be updated remotely. As a result, some of your OnStar® system functions may not be working as expected." The customer is further instructed in this letter to "Please contact your dealer – or any dealer near you – as soon as possible to schedule an appointment for this no-cost software update. Your dealer will reprogram your OnStar® module with an update. This is for vehicles that have previously received the Canada upgrade as described in Service Bulletin #15-08-44-001F."

Why selected：The source's vehicle field includes the trim.

This SKU is a Climate Control Module. The customer communication requested return of unsold inventory to inspect for a software issue. If the software issue exists it can cause a fan in the climate control system to stay on even when the ignition is turned off. The fan staying on even though the ignition is off can drain the battery, making the vehicle unable to start.

Communication summary

This SKU is a Climate Control Module. The customer communication requested return of unsold inventory to inspect for a software issue. If the software issue exists it can cause a fan in the climate control system to stay on even when the ignition is turned off. The fan staying on even though the ignition is off can drain the battery, making the vehicle unable to start.

Why selected：The trim (Denali) is not stated.

DRIVER SEAT NOT MOVING FORWARD I'VE SEEN OTHER COMPLAINTS ABOUT THIS ALSO THE GAS GAUGE ISN'T WORK NOR IS THE SPEEDOMETER WE REPLACED STEPPING MOTORS STILL NOT WORKING THIS IS A SAFETY HAZARD KNOWING HOW FAST I'M GOING..

Observed

DRIVER SEAT NOT MOVING FORWARD I'VE SEEN OTHER COMPLAINTS ABOUT THIS ALSO THE GAS GAUGE ISN'T WORK NOR IS THE SPEEDOMETER WE REPLACED STEPPING MOTORS STILL NOT WORKING THIS IS A SAFETY HAZARD KNOWING HOW FAST I'M GOING..

Inspection

Not stated

Repair

Not stated

Outcome

Not stated

Why selected：The trim (Denali) is not stated.

The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

Communication summary

The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

Why selected：The source's vehicle field includes the trim.

This informational bulletin provides information for the IPC odometer programming method quick reference guide.

Communication summary

This informational bulletin provides information for the IPC odometer programming method quick reference guide.

Why selected：The source's vehicle field includes the trim.

This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle. Â

Communication summary

This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle. Â

Why selected：The source's vehicle field says Yukon; whether it is an XL is not stated.

This Preliminary information communicates information to dealership on how to clear a B1001 DTC after replacing the BCM or SDM.

Communication summary

This Preliminary information communicates information to dealership on how to clear a B1001 DTC after replacing the BCM or SDM.

Why selected：The source's vehicle field says Yukon; whether it is an XL is not stated.

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

Communication summary

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

Why selected：The source's vehicle field includes the trim.

This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.Â

Communication summary

This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.Â

Why selected：The source's vehicle field includes the trim.

This Preliminary Information communication provides information to the technician about vibration complaints that are one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Diagnostic Kit to effectively diagnosis vehicles. Technician should drive the vehicle will using the Pico Oscilloscope to record data. After the data is recorded it should be reviewed to determine the root cause of the concern. If a repair attempt made the concern better but not eliminated or had no affect at all, and are requesting assistance from General Motors Technical Assistance Center record another Pico file and save it to the computer. After the new Pico Oscilloscope data has been saved email the data to General Motors Technical Assistance Center in the subject line include ?Vibration? ?Business Associate Code? and the last 8 of the Vehicle Identification Number.

Communication summary

This Preliminary Information communication provides information to the technician about vibration complaints that are one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Diagnostic Kit to effectively diagnosis vehicles. Technician should drive the vehicle will using the Pico Oscilloscope to record data. After the data is recorded it should be reviewed to determine the root cause of the concern. If a repair attempt made the concern better but not eliminated or had no affect at all, and are requesting assistance from General Motors Technical Assistance Center record another Pico file and save it to the computer. After the new Pico Oscilloscope data has been saved email the data to General Motors Technical Assistance Center in the subject line include ?Vibration? ?Business Associate Code? and the last 8 of the Vehicle Identification Number.

Why selected：The source's vehicle field includes the trim.

This preliminary information bulletin provides information om Service Programming System (SPS) Error Codes E4398, E4399, E4403, M4404, M4413, E4414, E4423, E4491 or E6961).

Communication summary

This preliminary information bulletin provides information om Service Programming System (SPS) Error Codes E4398, E4399, E4403, M4404, M4413, E4414, E4423, E4491 or E6961).

Why selected：The source's vehicle field includes the trim.

This preliminary information bulletin provides a procedure for suspension connector diagnosis and replacement due to the magnetically controlled suspension electrical connector not seated.

Communication summary

This preliminary information bulletin provides a procedure for suspension connector diagnosis and replacement due to the magnetically controlled suspension electrical connector not seated.

Why selected：The trim (Denali) is not stated.

This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.

Communication summary

This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.

Why selected：The source's vehicle field includes the trim.

This bulletin explains the labor operation numbers used for submitting warranty claims for module reprogramming and not when replacing a module.

Communication summary

This bulletin explains the labor operation numbers used for submitting warranty claims for module reprogramming and not when replacing a module.

Why selected：The source's vehicle field includes the trim.

This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.Â

Communication summary

This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.Â

Why selected：The source's vehicle field includes the trim.

This Preliminary Information communicates to technicians that the Daytime Running Lamps (DRL's) or the auto headlamps will not shut off when using the daytime running lamp disable switch (Which is part of the headlamp switch), if the vehicles was built for Canada (RPO Z49).   These vehicles were built with different software that doesn't allow the DRL's or Auto headlamp to be shut off. Canada law prohibits disabling daytime running lamps (DRL's) or auto headlamps.

Communication summary

This Preliminary Information communicates to technicians that the Daytime Running Lamps (DRL's) or the auto headlamps will not shut off when using the daytime running lamp disable switch (Which is part of the headlamp switch), if the vehicles was built for Canada (RPO Z49).   These vehicles were built with different software that doesn't allow the DRL's or Auto headlamp to be shut off. Canada law prohibits disabling daytime running lamps (DRL's) or auto headlamps.

Why selected：The source's vehicle field says Yukon; whether it is an XL is not stated. The trim (Denali) is not stated.

This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle. Â

Communication summary

This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle. Â

Why selected：The source's vehicle field says Yukon; whether it is an XL is not stated.

This bulletin provides information for electrical ground repairs using new replacement fasteners with "conductive finish".

Communication summary

This bulletin provides information for electrical ground repairs using new replacement fasteners with "conductive finish".

Why selected：The source's vehicle field includes the trim.

This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.

Communication summary

This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.

Why selected：The source's vehicle field includes the trim.